Please show all work and do not just repost an answer to a different question, those answers are incorrect. If you post an incorrect answer/one of those answers i will down vote you and i will report you. As my specific instructions say DO NOT post old/already posted answers please read all instructions and show all work and steps clearly. Please make sure you come to the correct answer that is listed on the bottom. Thank you. THE CORRECT ANSWER TO THIS QUESTION IS 0.31. DO NOT POST IF YOU DO NOT GET THIS ANSWER. THERE ARE ALREADY FOUR DIFFERENT POSTS FOR THIS SAME QUESTION THAT DO NOT HAVE. THE CORRECT ANSWER. PLEASE MAKE SURE YOU ARE GETTING 0.31 AND NOT JUST POSTING AN OLD ANSWER. please and thank you.

The Urubamba River in Peru flows across a large elevation change, from about 3,500 to 2,500 meters above sea level. The surface temperature of the water varies across seasons. The river is home to fish that depend on dissolved oxygen in the water. By how much would the saturation concentration of dissolved oxygen (CO2) change from the highest point in the river to the lowest point in the river if the water's surface temperature is about 20C? Enter your answer with units of mg/L, correct to two decimal places, with a positive sign indicating an increase from the highest point to the lowest point or a negative sign indicating a decrease from the highest point to the lowest point. Tables of (1) atmospheric pressure vs. altitude and (2) Henry's Law constants at different temperatures are provided below. Hint: psia = pounds per square inch; 1 atm = 14.7 psia Table 1 Altitude (meters above sea level) Atmospheric Pressure (psia) 2000 13.66 2500 13.41 3000 13.16 3500 12.92 4000 12.68 Table 2 Temperature (C) KH,02 (Imam) mol 10 -3 1.7 x 10 15 1.5 x 10- -3 -3 20 1.4 x 10 -3 25 1.2 x 10